Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 5b04551305572c82…

MALICIOUS

Office (OLE) / .DOCX

131.0 KB Created: 2020-09-29 22:12:00 Authoring application: Microsoft Office Word
MD5: 159911532ceaea264720fa15af6f2b7d SHA-1: e18d30aed4163e070edcd9f4ad21112f2f7bd3ae SHA-256: 5b04551305572c828c0ac8143249ef7e94223b0fbf7d12b43f77c4e3da8bda45
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file contains a high-severity VBA macro that executes upon opening the document, as indicated by the 'Document_Open' macro firing. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9769437-0', strongly suggesting the Emotet family. The macro's obfuscated nature and use of CreateObject point towards downloading and executing a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9769437-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769437-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
46ea4f5c4c1cab321c0ffaa5340d45e7ba78bb5fcec47c12e0336c19b81c43df
vba-macro oletools.olevba.extract_macros (decoded VBA source) 10333 bytes